Safety Measurement System - Complete SMS Profile (U.S. DOT# 3421489)

IRON SPUR ENTERPRISE CO

U.S. DOT#: 3421489

Address: 18450 E 1070 RD
CHEYENNE, OK 73628
Number of Vehicles: 4
Number of Drivers: 4
Number of Inspections: 8

Safety Rating & OOS Rates AND Licensing and Insurance

As part of FMCSA’s IT modernization strategy, we are in the process of merging our data platforms to make it easier for you to find the information you need. During this transition, please refer to the links below for additional information about this carrier.

For licensing and insurance information, visit Motus: USDOT Registration System.
For safety rating and Out-of-Service (OOS) rates, visit SAFER.
If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.

BASIC Status (Public Property Carrier View)

Behavior Analysis & Safety Improvement Categories (BASICs) Based on a 24-month record ending June 26, 2026

On-Road Performance
7.90 Measure	Not Public	0.87 Measure	17.14 Measure	0 Measure	Not Public	0 Measure
On-Road Performance Detail
Driver Inspections with Unsafe Driving Violations: 2 Safety Event Group: No Safety Event Grouping Avg. PU × UF: 3.7 Segment: Combination Carrier	Not Public	Driver Inspections: 8 with HOS Compliance Violations: 1 Safety Event Group: 3-10 relevant driver inspections	Vehicle Inspections: 3 with Vehicle Maint. Violations: 2 Safety Event Group: No Safety Event Grouping	Driver Inspections: 8 with Drugs/Alcohol Violations: 0 Safety Event Group: No Safety Event Grouping	Not Public	Driver Inspections: 8 with Driver Fitness Violations: 0 Safety Event Group: 5-10 relevant driver inspections
Investigation Results
No Acute/Critical Violations Discovered	N/A	No Acute/Critical Violations Discovered	No Acute/Critical Violations Discovered	No Acute/Critical Violations Discovered	Not Public	No Acute/Critical Violations Discovered

Select a BASIC icon above to get details, or view your Complete SMS Profile.

Violation Summary

Violations: 14


Violations	Description	# Violations	# OOS Violations	Violation Severity Weight	BASIC

392.2-SLLFC	State/Local Laws - Following too closely	1	0	5	Unsafe Driving
392.2-SLLS3	State/Local Laws - Speeding 11-14 miles per hour over the speed limit	1	0	7	Unsafe Driving
395.8A-NON-ELD	No record of duty status when one is required (ELD Not Required)	1	1	5	HOS Compliance
393.45B2-B-AIR	Air Brake - Hose/tubing damaged or not secured	1	0	4	Vehicle Maint.
393.45B2-BHTD	Air Brake - Hose/tubing damage into the outer reinforcement ply.	1	1	4	Vehicle Maint.
393.75A1-TEPBM	Tires - All others - Exposed ply or belt material in tread or sidewall area	1	0	8	Vehicle Maint.
393.75A3-TAOL	Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS	1	1	8	Vehicle Maint.
393.75C-TAOTD-LT2/32	Tires - Less than 2/32 inch tread depth	1	0	8	Vehicle Maint.
393.95A4-EEUS	Emergency Equipment - Fire Extinguishers - unsecured	1	0	2	Vehicle Maint.
393.9A-LFTSI	Lighting - Front - Turn signal - inoperative	1	0	6	Vehicle Maint.
393.9A-LIL	Lighting - Identification lamp(s) inoperative	1	0	2	Vehicle Maint.
393.9A-LRLI	Lighting - Tail lamp - Any inoperative	1	0	6	Vehicle Maint.
393.9A-LSLI	Lighting - Stop lamps - Any inoperative.	1	0	6	Vehicle Maint.
393.9A-LTSIR	Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit	1	0	6	Vehicle Maint.

Inspection History

Total Inspections: 8


Report			Vehicle			Measure
Inspection Date	Number	State	Plate Number	Plate State	Type	Severity Weight (SW)	Time Weight (TiW)

4/17/2026	KSHP03840640	KS	3MX556	OK	TRUCK TRACTOR		3
Vehicle Maint. Violation: 393.75C-TAOTD-LT2/32 Tires - Less than 2/32 inch tread depth						8
Vehicle Maint. Violation: 393.75A1-TEPBM Tires - All others - Exposed ply or belt material in tread or sidewall area						8
Vehicle Maint. Violation: 393.95A4-EEUS Emergency Equipment - Fire Extinguishers - unsecured						2
Vehicle Maint. Violation: 393.9A-LFTSI Lighting - Front - Turn signal - inoperative						6
Vehicle Maint. Violation: 393.9A-LRLI Lighting - Tail lamp - Any inoperative						6
3/19/2026	KS9355000017	KS	257895	KS	TRUCK TRACTOR		3
2/6/2026	OKM700000431	OK	257895	KS	TRUCK TRACTOR		3
Unsafe Driving Violation: 392.2-SLLFC State/Local Laws - Following too closely						5
9/16/2025	CO0507450048	CO	3GV956	OK	TRUCK TRACTOR		2
8/4/2025	NM4396P60M9C	NM	3GV956	OK	TRUCK TRACTOR		2
HOS Compliance Violation: 395.8A-NON-ELD No record of duty status when one is required (ELD Not Required) (OOS)						5 + 2 (OOS)
Unsafe Driving Violation: 392.2-SLLS3 State/Local Laws - Speeding 11-14 miles per hour over the speed limit						7
3/7/2025	CO0649150390	CO	3GV956	OK	TRUCK TRACTOR		1
Vehicle Maint. Violation: 393.9A-LTSIR Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit						6
Vehicle Maint. Violation: 393.9A-LSLI Lighting - Stop lamps - Any inoperative.						6
Vehicle Maint. Violation: 393.9A-LIL Lighting - Identification lamp(s) inoperative						2
Vehicle Maint. Violation: 393.75A3-TAOL Tires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS (OOS)						8 + 2 (OOS)
Vehicle Maint. Violation: 393.45B2-B-AIR Air Brake - Hose/tubing damaged or not secured						4
Vehicle Maint. Violation: 393.45B2-BHTD Air Brake - Hose/tubing damage into the outer reinforcement ply. (OOS)						4 + 2 (OOS)
1/21/2025	OKV900172621	OK	257895	KS	TRUCK TRACTOR		1
8/8/2024	CO1577810281	CO	3GV956	OK	TRUCK TRACTOR		1

Reviewed-Not Preventable Crash Activity (vehicles involved in crashes)

Total Number of Crashes: 0

This carrier has no crashes to display.

Crashes Included in SMS (vehicles involved in crashes)

Total Number of Crashes: 0

This carrier has no crashes to display.

Investigation Results

Acute/Critical Violations: 0

This carrier has no Acute/Critical violations to display.

Summary of Activities

The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.

Most Recent Investigation:
Total Inspections: 8
- Total Inspections without Violations used in SMS: 4
- Total Inspections with Violations used in SMS: 4
Total Crashes* : 0

*Crashes listed represent a motor carrier’s involvement in reportable crashes, regardless of the carrier’s or driver’s role in the crash. Continue for details.

Continue for more Crash, Inspection & Investigation Details

Carrier Registration

Carrier Registration Details Subject to General Threshold Update Registration Info

Inspection Selection System

For licensing and insurance information, visit Motus: USDOT Registration System.
For safety rating and Out-of-Service (OOS) rates, visit SAFER.
If you are a motor carrier looking for your Inspection Selection System (ISS) value, log in to the FMCSA Portal.

Enforcement Cases

(Six years as of 07/17/2026 updated monthly from FMCSA )

No penalties found

Tools/Resources

SMS Methodology How to Improve Request a Data Review

For U.S. DOT# 3421489

Complete SMS Profile Carrier History Downloads

Summary of Activities (as of 6/26/2026, updated monthly)

The summary includes information on the 5 most recent investigations and 24 months of inspections and crash history.

Most Recent Investigation: None	Total Inspections: 8 Total inspections without violations used in SMS: 4 Total inspections with violations used in SMS: 4	Total Crashes: 0*
	# Insp. OOS Driver Inspections 8 12.5% Vehicle Inspections 3 33.3% Placardable HM Inspections 0 0.0% % Placardable HM Inspections 0.0%	Fatal Crashes 0 Injury Crashes 0 Towaway Crashes 0

*Crashes listed represent a motor carrier’s involvement in reportable crashes, regardless of the carrier’s or driver’s role in the crash. Continue for details.

Downloads

Select a focus and file type to download SMS data.

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Average PU × Utilization Factor (as of 6/26/2026, updated monthly)

The SMS normalizes the Unsafe Driving and Crash Indicator BASICs measure by carrier size (i.e., a hybrid power unit and vehicle miles travelled measure) to account for exposure. Carrier size is defined as average power units multiplied by the utilization factor.

3.7 Average PU × Utilization Factor = 3.7 Average Power Units × 1 Utilization Factor

Average Power Units
Utilization Factor

In order to account for changes in a carrier's fleet size during the previous 24 months an average power unit value is used in the calculation to determine a carrier's Unsafe Driving BASIC and Crash Indicator measures.

3.7 Average Power Units = 4 Current Power Units + 4 Power Units 6 Months Ago + 3 Power Units 18 Months Ago
3

The Utilization Factor is a multiplier that adjusted the average PU values based on the utilization in terms of VMT per average PU.

Determine Carrier Segment: Combo
Combination trucks/motor coach buses constituting 70% or more of the total PU
U.S. DOT# 3421489 = 100% Combination trucks/motor coach buses
Determine VMT per Average Power Unit
32,697 VMT per Average Power Unit = 120,000 VMT From Registration (MCS-150) ÷ 3.7 Average Power Units

Based on Step 1 and 2 calculate the Utilization Factor

Combo Segment
Meets Criteria	VMT per Avgerage PU	Utilization Factor
	< 80,000	1
	80,000 – 160,000	1 + (VMT per PU − 80,000) ÷ 133,333
	160,000 – 200,000	1.6
	> 200,000	1
	No Recent VMT Information	1

Use of SMS Data/Information

FAST Act of 2015:

Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier has received an UNSATISFACTORY safety rating under part 385 of title 49, Code of Federal Regulations, or has otherwise been ordered to discontinue operations by the Federal Motor Carrier Safety Administration, it is authorized to operate on the Nation's roadways.

Safety Measurement System:

The data in the Safety Measurement System (SMS) is performance data used by the Agency and Enforcement Community. A symbol, based on that data, indicates that FMCSA may prioritize a motor carrier for further monitoring.

The symbol is not intended to imply any federal safety rating of the carrier pursuant to 49 USC 31144. Readers should not draw conclusions about a carrier's overall safety condition simply based on the data displayed in this system. Unless a motor carrier in the SMS has received an UNSATISFACTORY safety rating pursuant to 49 CFR Part 385, or has otherwise been ordered to discontinue operations by the FMCSA, it is authorized to operate on the nation's roadways.

Motor carrier safety ratings are available at http://safer.fmcsa.dot.gov and motor carrier licensing and insurance status are available at http://li-public.fmcsa.dot.gov/.